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perf python: Check if clang supports -fno-semantic-interposition
The set of C compiler options used by distros to build python bindings may include options that are unknown to clang, we check for a variety of such options, add -fno-semantic-interposition to that mix: This fixes the build on, among others, Manjaro Linux: GEN /tmp/build/perf/python/perf.so clang-9: error: unknown argument: '-fno-semantic-interposition' error: command 'clang' failed with exit status 1 make: Leaving directory '/git/perf/tools/perf' [perfbuilder@602aed1c266d ~]$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-pkgversion='Arch Linux 9.3.0-1' --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-shared --enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp --enable-cet=auto gdc_include_dir=/usr/include/dlang/gdc Thread model: posix gcc version 9.3.0 (Arch Linux 9.3.0-1) [perfbuilder@602aed1c266d ~]$ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -21,6 +21,8 @@ if cc_is_clang:
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vars[var] = sub("-fstack-clash-protection", "", vars[var])
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if not clang_has_option("-fstack-protector-strong"):
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vars[var] = sub("-fstack-protector-strong", "", vars[var])
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if not clang_has_option("-fno-semantic-interposition"):
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vars[var] = sub("-fno-semantic-interposition", "", vars[var])
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from distutils.core import setup, Extension
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